312 The Philippine Journal of Science isis 



or almost wanting, the terminal clasp segment large, greatly 



swollen; ventral plate entire Halodiplosis Kieff. 



tf. Circumfila with short bows, the thirteenth and fourteenth seg- 

 ments with short stems ; terminal clasp segment slender ; ventral 

 plate longer than the dorsal and deeply emarginate. 



Ametrodiplosis Riibs. 

 (f. Circumfila rudimentary. 



e^. Costa with a fusiform swelling basad, the basal stem of the 

 fifth antennal segment with a length equal to its diameter; 

 ventral plate much longer than the dorsal, much constricted 

 and with a deep, straight incision, the lobes pointed; terminal 



clasp segment arched and long Cyrtodiplosis Kieff. 



e". Costa not thickened basad, the basal stem of the fifth antennal 

 segment with a length equal to the basal enlargement, the 

 ventral plate sublinear, longer than the dorsal, narrowly 

 incised and with two straight lobes; terminal clasp segment 



long, slender, curved Anthodiplosis Kieff. 



b'. Palpi triarticulate. 

 c\ Basal clasp segment with a conspicuous triangular process apicad. 

 rf'. Terminal clasp segment subapical, the claws as long as the 



pulvilli Dentiflbula Felt. 



* c'. Basal clasp segment without a process apicad. 



cf. Terminal clasp segment stout, with a length about three times 

 its diameter; ventral plate almost truncate... Myricomyia Kieff. 

 rf'. Terminal clasp segment ellipsoidal, pubescent. 



e^. Ovipositor short, the length about equal to its diameter. 



Zeuxidiplosis Kieff. 



e'. Ovipositor long, striate Stenodiplosis Reut. 



b^. Palpi biarticulate. 

 c'. Third vein extending beyond the apex, the terminal clasp segment 

 short, moderately stout, the dorsal plate short, deeply and 



triangularly emarginate Anadiplosis Tav. 



b*. Palpi uniarticulate. 



c\ Third vein uniting with the margin well beyond the apex, the 

 dorsal and ventral plates both long and emarginate. 



Kronodiplosis g. nov. 



TRIFILI 



a\ Claws toothed on all the legs. 

 6\ Palpi quadriarticulate. 



c*. Circumfila with one or more greatly produced bows or loops having 



a length five to ten times that of the enlargement and extending 



at approximately right angles to it. 



cf. Three well-developed circumfila on each flagellate antennal 



segment. 



e^. The three circumfila irregular, the pulvilli rudimentary, the 



ventral plate spatulate Tiibremia Kieff. 



er. Two circumfila irregular and one regular, the circumfilum on 

 the basal enlargement with two greatly produced loops and 

 the one on the distal enlargement with a shorter bow or loop, 



p. Pulvilli a little shorter than the claws Isobremia Kieff. 



f. Pulvilli rudimentary or wanting Cryptobremia Kieff. 



